皮皮学，免费搜题
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搜题
【单选题】
根据红皮书的安全准则，DOS系统的安全级别属于A.
D1
B.
C1
C.
C2
D.
B1
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】How many times can the man meet the woman in the office every week? [A] 2. [B] 3. [C] 4. [D] 5.
【简答题】meet
【单选题】Who is the woman going to meet?
A.
The General Manager.
B.
The Marketing Director.
C.
The chief designer.
【简答题】给对话排序。 1. Nice to meet you, too. 2. Hello, Dale, 3. Hello, Kim. Nice to meet you. _____________________________
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【简答题】How many times can the man meet the woman in the office every week? [A] 2. [B] 3. [C] 4. [D] 5.